SL6609A
COMPONENTS LIST FOR APPLICATION BOARD At 470MHz, 25kHz Channel Spacing.
(LO circuit is 50Wnetwork as in Fig.5 - crystal oscillator not specified)
Resistors
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C34
VC1
1n
1n
1n
1n
1n
not used
1n
R1
R2
R3
R4
R5
R6
R7
R8
open circuit
open circuit
100
100k
100
100
100
open circuit
220k
1n
not used
not used
1n
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R22
1M
100k (2)
300 (3)
3k9 (1)
1n
open circuit
not used
not used
100p
2u2
2u2
1p5
1-3pF
4k7
4k7
33k
open circuit (4)
0R (4)
open circuit
Inductors
Capacitors
L1
L2
T1
47nH (5)
C1
C2
C3
1n
3.3pF
1n
not used (3)
16nH 2 Turn 1:1 (Coilcraft) Q4123-A
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
1n
Active Components
3.9pF
2u2
1n
100n
1n (2)
2u2
100n
1n
Q1
Q2
Q3
Q4
Q5
D1
Zetex FMMT589
Philips BFT25A
Not Used
Philips BFT25A(3)
Philips BFT25A
Panasonic MA862(6)
1n
Notes
1.
2.
The values of R13 is determined by the set-up proce-
dure. See Application Note.
Pin 9 (TCADJ) to VR (Pin 6) and by connecting Pin 28
(IAGCOUT) to Vcc1, (R18). The voltage at Pin 8 may
still be used as an RSSI. R9, C8, C14, C19, R17 and
D1 may then be omitted.
The value of "C9" is determined by the output data rate.
Use 2nF for 512bps, 1nF for 1200bps and 470pF for
2400bps.
5.
L1and C26 form the low noise matching network for the
RF amplifier. The values given are for the RF amplifier
specified in the Applications Circuit with no Audio AGC
connected. i.e. R17 and D1 omitted.
3.
4.
R12 & Q4 form a dummy load for the regulator.
Permitted load currents for the regulator are 250µA to
5mA. The 1V regulator (output Pin 23) can be switched
off by connecting Pin 23 directly to VCC2. Q1, Q4, R12
and C12 must then be omitted
6.
7.
Suggested diode for use with the Audio AGC circuit
(D1 is not included on the general demonstration
circuit).
L2 is used in the Audio AGC circuit (see Fig.6). For the
characteristics of the Audio AGC current source see
figure 7. If the Audio AGC is not required then the
current source (Pin 28) may be disabled by connecting
The value of R11 is dependent on the data output load.
R11 should allow sufficient current to drive the data
output load.
8
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
